Artificial rubber.



WILLIAM HAMILTON BROWNLOW, OF BROGKVILLE, ONTARIO, JANADA.

ARTIFICIAL RUBBER.

Specification of Letters Patent.

Patented Oct. 29, 1907.

Application filed January 15. 1907- Serial No. 352,399.

To all whom it may concern:

Be it known that I, WILLIAM HAMILTON BROWNLOW, of the town of Brockville, in the county of Leeds, Province of Ontario, Dominion of Canada. locomotiveengineer, have invented certain new and useful I1n provements in Artificial Rubber, oi which the following is a specification This invention relates to an improved artificial rubher which may be very cheaply manufactured and which may, in a great many instances replace natural rubber. In particuler,'the compound is useful for filling pneumatic tires, to render the same punctureproof, and for the manufacturing of small molded rubber toys.

The composition consists oi the following ingredients combined in the proportions stated, viz

Glue 7,000 53mins. Molasses 7,000

Glycerin i 1,750

- Wood tar l5 For use in pneumatic tires the mixture is inserted in the tires in its liquid condition and when it cools ii, hecomes n dense hnt elastic suhsiunce greatly resembling rubber in its appearance and propcriies. By filling; the tires with this under pressure all the cushioning effects of an ordinary n'leun'uitic tire are obtained Withoui ihn d is-iidvuntage of the liability in puncture.

It will he understood Ihut in hurrying on. my invention certain changes muy he made in the pinporiions f the compound withou nu te .ily depuriing from the spirit oi my invention.

hat I claim as my in'venLion isz- The herein described (fllUpOHlllUli of matter; or the purpose specified. consisting of glue, seven thousand rrulns, or thcrcnhouts. moiussosz, even thousund grains or therczihouts, glycerin, one thousgnd. seven hund ed and titty grains or thercmhouts, wood Lur. tlft mn gzrulns or thereubouts. substantially 21 described and us and tor the purpose specified.

Signed zit BLOCliVllliE, in the Province ofOnierio, (inn- :idu, this 11th day otyiunu: y, 1001. 

